The in-situ mechanical spectroscopy and electric resistance study of WE43 magnesium alloy during aging
Abstrakt
The WE43 magnesium alloy was studied by mechanical spectroscopy and electric resistance measurements in-situ during aging at 210 and 250 degrees C. Isothermal aging up to 196 h at these temperatures promotes only minor increase in the Young's modulus (0.4-2.5%).
The mechanical spectroscopy results correlate with the resistance measurements and are discussed with respect to the precipitation sequence in this material. Furthermore, during heating up to 450 degrees C, the mechanical spectroscopy measurements identified an internal friction peak at similar to 350 degrees C which is brought about by the relaxation at interfaces between the semicoherent and incoherent precipitates and the matrix.
Height of the peak is dependent on the material thermal history.